In a message dated 9/7/99 7:08:40 PM Central Daylight Time, [log in to unmask] writes: > I would not consider only ICs. I heard about possibe damages on > crystals (especially if some harmonics from the ultrasound hit the > quartz frequency) and ceramic chip capacitors (they cracked). > > ... can of worms ..... > just my 2 cents > Regards > Matthias Mansfeld > > > ----------------------------------------------- > Matthias Mansfeld Elektronik > * Printed Circuit Board Design and Assembly > Am Langhoelzl 11, D-85540 Haar, GERMANY > Phone: +49-89-4620 0937, Fax: +49-89-4620 0938 > E-Mail: [log in to unmask] > Internet: http://www.mansfeld-elektronik.de Hello Matthias! Just curious, were those problems that you spoke of with a fixed frequency? I'm just trying to learn more about the "sweep-fequencies" that I spoke of in my reply earlier, to trying and learn if anybody else has considered this ultrasonic technology...and if it addresses the issues you speak of... -Steve Gregory- PS - Just got initiated to Tulsa severe weather tonight...thunder that shook the whole apartment building I'm in like a earthquake (well, as a California kid I'm kinda used to that...it just wasn't so LOUD is all) BUT, I'm not used to seeing ice "golfballs" falling outta the sky...WHEW! As I click my ruby slippers; "There's no place like home Toto, there's no place like home..." (a nervous; "hehehe"....YIKES!) ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################